The correlation function of $\ppiPlus$ pairs for common and non-common ancestor obtained with PYTHIA 8.2 (Monash 2013 Tune)  together with GEANT3  as a function of the pair relative momentum $k^*$ in several intervals of the pair \mtText: (a) $[0.54, 0.75)\text{ GeV}/c^2$, (b) $[0.75, 0.95)\text{ GeV}/c^2$, (c) $[0.95, 1.2)\text{ GeV}/c^2$, (d) $[1.2, 1.5)\text{ GeV}/c^2$, (e) $[1.5, 2.0)\text{ GeV}/c^2$, and (f) $[2.0, 2.5)\text{ GeV}/c^2$. The lines represent the statistical uncertainties. Resonance contributions such as the $\Delta^{++}$ have been explicitly removed in the common ancestor correlation functions as these contributions are modeled separately.